Hi all, I'm new here. Im 3 days late period was due Friday. I've done 2 clear blue digital test one last night and one this afternoon. Both came back negative. I done a clear blue first response this morning with my first wee and it has what looks like a very faint line. Im wondering could it be an evaporation line? My parter and in-laws can see it. It has a tinge of blue to it. My periods are like clockwork and I've only ever missed with my previous pregnancies.